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powerpc: Drop zalloc_maybe_bootmem()

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The only callers of zalloc_maybe_bootmem() are PCI setup routines. These
used to be called early during boot before slab setup, and also during
runtime due to hotplug.

But commit 5537fcb319 ("powerpc/pci: Add ppc_md.discover_phbs()")
moved the boot-time calls later, after slab setup, meaning there's no
longer any need for zalloc_maybe_bootmem(), kzalloc() can be used in all
cases.

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230823055430.752550-1-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2023-08-23 15:54:30 +10:00
parent 22b165617b
commit fabdb27da7
5 changed files with 3 additions and 27 deletions
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1
arch/powerpc/include/asm/setup.h
View File

@ -8,7 +8,6 @@
extern void ppc_printk_progress(char *s, unsigned short hex);
extern unsigned long long memory_limit;
extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
struct device_node;

2
arch/powerpc/kernel/pci-common.c
View File

@ -125,7 +125,7 @@ struct pci_controller *pcibios_alloc_controller(struct device_node *dev)
{
struct pci_controller *phb;
phb = zalloc_maybe_bootmem(sizeof(struct pci_controller), GFP_KERNEL);
phb = kzalloc(sizeof(struct pci_controller), GFP_KERNEL);
if (phb == NULL)
return NULL;

2
arch/powerpc/lib/Makefile
View File

@ -27,7 +27,7 @@ endif
CFLAGS_code-patching.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_feature-fixups.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
obj-y += alloc.o code-patching.o feature-fixups.o pmem.o
obj-y += code-patching.o feature-fixups.o pmem.o
obj-$(CONFIG_CODE_PATCHING_SELFTEST) += test-code-patching.o

23
arch/powerpc/lib/alloc.c
View File

@ -1,23 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/memblock.h>
#include <linux/string.h>
#include <asm/setup.h>
void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
{
void *p;
if (slab_is_available())
p = kzalloc(size, mask);
else {
p = memblock_alloc(size, SMP_CACHE_BYTES);
if (!p)
panic("%s: Failed to allocate %zu bytes\n", __func__,
size);
}
return p;
}

2
arch/powerpc/sysdev/fsl_pci.c
View File

@ -767,7 +767,7 @@ static int __init mpc83xx_pcie_setup(struct pci_controller *hose,
u32 cfg_bar;
int ret = -ENOMEM;
pcie = zalloc_maybe_bootmem(sizeof(*pcie), GFP_KERNEL);
pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return ret;